Pen light



FIG. 1 is a perspective view of a pen light showing the claimed design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a left side view thereof.

The broken lines shown are provided for the purpose of illustrating portions of the pen light and form no part of the claimed design. 

CLAIM The ornamental design for a pen light, as shown and described. 